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FFQ25/35/50/60BV1B
Si21-205
250
Removal Procedure
1.13 Replacement of PC Board
Procedure
Warning
Be sure to wait 10 minutes or more after turning off all power supplies
before disassembling work.
Step
Procedure
Points
1. Removing the PC Board
1
Remove the switch box
cover.
(M4 screw
×
2)
2
Disconnect the
connectors shown in
the right connected to
the PC board.
Cut the tie wrap fixing
the low tension cable
(blue) to the switch box.
3
Press two claws
supporting the PC
board to disengage one
side of the PCB, then tilt
the board and
disconnect the lead
wire for swing flap.
(X36A)
Air temperature thermistor : X19A
High tension cable of transformer : X11A
Low tension cable of transformer : X10A
Outdoor unit connection wire : X27A
Fan motor lead wire : X20A
Lead wire of remote controller : X5A
Lead wire of drain pump : X25A
Lead wire of liquid pipe thermistor : X18A
Lead wire of swing motor : X36A (Refer to the item 3 below.)
Lead wire of thermistor for heating : X17A
Lead wire of float switch : X15A
Lead wire of
remote controller
Tie wrap
Claw
Claw
Low-voltage cable
of transformer
Connector for
fan motor
High-voltage
cable of
transformer
Cut this tie wrap
Cut this tie wrap
Air temperature thermistor
To the swing
flap motor
Outdoor unit
connection wire
and earth wire
Outdoor unit
connection
wire terminal
P1 P2 F1 F2
X17A
X36A
X18A
X25A
X20A
X27A
X11A
X10A
X19A
X15A
X5A
(S2687)
Claw
(S2688)
Summary of Contents for Sky Air B-Series R-410A
Page 7: ...Si21 205 vi Table of Contents ...
Page 15: ...Models Si21 205 4 Model Name and Power Supply ...
Page 16: ...Si21 205 Functions 5 Part 2 Functions 1 List of Functions 6 ...
Page 35: ...Wireless Remote Controller Si21 205 24 Remote Controller ...
Page 79: ...Settings Concerning Maintenance Si21 205 68 Field Setting Detail of PCB 2 ...
Page 83: ...Maintenance Mode Setting Si21 205 72 Field Setting ...
Page 239: ...Troubleshooting for Outdoor Unit 50 60 class Si21 205 228 Troubleshooting ...
Page 321: ...Outdoor Unit 50 60 class Si21 205 310 Removal Procedure ...